â¤0.2 mg/dL. Measurement of the levels of bilirubin is used in the diagnosis and treatment of liver, hemolytic, hematologic, and metabolic disorders, including hepatitis and gall bladder obstruction. The assessment of direct bilirubin is helpful in the differentiation of hepatic disorders.
Ritchie Valens. In an all too brief career, Ritchie Valens was the first Chicano rock and roll star, having his best remembered hit, La Bamba, just one month before his untimely death with Buddy Holly and the Big Bopper on February 3, 1959.
Pilot Roger Peterson was also killed in the crash. Ritchie's sister Connie Valens Lemos paid a surprise visit to the Surf Ballroom Wednesday night on the eve of start of the 2011 Winter Dance Party.On Thursday morning she was visiting with old friends at the Surf.t was 52 years ago Thursday that a plane carrying Valens, who was just 17 years old at the time, Buddy Holly and J.P. The Big Bopper Richardson crashed just after take-off from the Mason City Airport. The trio had played a date earlier that night at the Surf Ballroom.